Heel-attaching machine



Oct. 18, 1938. J BARTON 2,133,372

HEEL ATTACHING MACHINE Filed May 1'7, 1957 Patented Oct. 18, 1938 UNITEDSTATES PATENT OFFICE HEEL-ATTACHING MACHINE Application May 17, 1937,Serial No. 143,035

13 Claims.

My invention relates to machines for attaching heels to shoes, itconcerning more particularly the means for presenting a heel-portion, asa top-lift, to a jacked shoe for attachment.

In heeling shoes, it is sometimes desired to use bases or top-liftswhich have. been prebreasted, or brought to a condition at thebreast-surfaces at which only a finishing operation is required afterattachment... This is advantageous because it avoids the danger ofcutting the outsole during the breasting or of exposing a depression inthe soleadjacent to the heel after the breast-cut has been made,thisdepression being caused by the pressure appliedin the heeler. to a solein temper. When thus operating upon prebreasted heels, it is notsatisfactory to locate them intheir holders in the usual manner, by.contact of a fixed fork with therear surface in connection with anopposite, yieldable breast-bar. Differences in theamountspreviouslyfltaken from the breasts will prevent accurateregistration of the top-lift and base, Gonsequently, it is desirable tolocate the heel-portions, by contact with thebreast, and for thisvpurpose, the breast-bar is commonly fixed upon its swing-plate orcarrier, while the rear forkis yieldable;

When a jacked shoe, to which a heel-base has been nailed, is broughtintoengagement with a top-lift inits holderfor the spanking operation,the breast-lines of the two heel-portions may be displaced from eachother longitudinally of the shoe, evenwhen gaged .by the breast-bar.This tends to, defeat the purpose of the prebreasted heel. Furthentheshoe may be turned slightly about the longitudinal axis of the jack,especially if a band-clamp.isnotemployed, so the breasts of the twoheel-portions will be out .of registrationangularly about such axis. Itis an object of my invention to correct these conditions. For thispurpose, the heel-contacting member, as the breast-bar, which ,isemployed to, determine the position of thetop-lift or otherheel-portion, is arranged to move under the influence of the work, so itmay thereby restore the, disturbed registration longitudinally of theshoe. The member may also be. provided with means to change the positionof the work to'produce a further corrective action. As herein disclosed,the breast-bar of the top-lift-holder has a surface receiving contact ofthe work, as of the breast-edge or corner of an attached base, thissurface being inclined outwardly from the opposite member furnished bythe rearfork. The-forces acting and reacting betweenthebase'and'breast-bar-surface will be effective to position the barand, with it, the toplift longitudinally of the shoe and, further, toturn the base with the shoe angularly, there being thus producedregistration between the breasts of the base and the lift. The finalrelation is determined by a gaging surface upon the breastbar, in whichthe inclined surface terminates. The two work-contacting members of theholder are preferably both yieldable, as against the action of springs,the spring for the breast-bar being stronger. The yield of the rearmember against the lighter spring facilitates the introduction of theheel-portion to the holder, while the yield of the breast-bar permitsthe registering action between the work-portions. As illustrated,theyield of the breast-bar is adjustably limited by a connection betweenit and the carrier consisting of a series of openings in one and acooperating separable pin in the other, there being clearance betweenthe pin and the opening which it occupies.

A particular embodiment of this invention is illustrated in theaccompanying drawing,

Fig. 1 being a top plan view of my improved holding means forheel-portions;

Fig. 2, a vertical section showing a shoe with an attached baseapproaching the spanking position, and v Fig. 3, an enlarged sectionaldetail on the line IIIIII of Fig. 1.

The invention appears as organized for application to a heel-attachingmachine such as that disclosed in Letters Patent of the United StatesNo. 1,157,688, Glidden, October 26, 1915. Between a jack l0 and adie-block ll carried by a crosshead l2, a shoe S may be clamped for thebasenailing and top-lift-spanking operations. The pin [3 of the jackenters the hole in the last L within the shoe. This support gives somefreedom of movement of the shoe both angularly about the-axis of thejack and longitudinally of the shoe itself. A swing-plate or likecarrier I4 is pivoted at IS on the crosshead for oscillation byconnections l8 to present in operating position above the die-blockeither a base-holder b or a top-lift-holder t. With the holder b, thisinvention is not especially concerned. It is sufficient to say that itreceives and locates a heelbase B, presenting it for attachment over thedieblock at the beginning of an operating cycle.

The top-lift-holder t has a rear fork 26 provided with a shank 28 guidedfor reciprocation upon the plate M in ways 30 in a cover-plate 32.Opposite the fork is a breast-bar 34, the shank 36 of which is movablein ways 3! in the plate 32. The end of the bar opposite its shank may beguided in ways upon the plate l4. At the upper edge of the breast-bar isa surface 38 inclined outwardly from the rear fork; that is, downwardlyand inwardly toward a Vertical work-engaging surface 39 of the bar, inwhich it terminates. The fork 26 may be urged toward the breast-bar intoits normal position by a spring 40, shown as of the torsion type andinterposed between the angular end 4| of the shank 23 and a wall orabutment 42 rising from the plate M. The spring is retained in place bya rod 44 projecting from the wall 42. On the inner end of this rod isthreaded a nut 46, with which the portion 4| of the fork-shank maycontact to adjustably limit the movement of the fork under the influenceof the spring 48. The breast-bar 34 is drawn toward the fork by atension-spring 48, joining the shank 36 near its outer extremity to someone of a series of openings in the plate l4. By changing the point ofattachment of the spring to the plate, the tension of this spring may bevaried. The force which it exerts to hold the breast-bar againstmovement is greater than that which the spring 40 applies to the rearfork. This locates the bar in a definite normal position which adapts itto gage prebreasted heels. To limit the movement of the breast-bar, itsshank has a series of openings 52, through any one of which may pass aheaded pin 54 held in one of two pairs of alined openings 56, 55 in theplates 14 and 32. The diameters of the openings 52 and the pin 54 aresuch that there is a substantial clearance between them. This allows theouter portion of the wall of one of the openings to be held against thepin by the spring 48, and the breast-bar to shift outwardly through thespace given by the clearance. By choosing different combinations of theopenings 52 and 56 to receive the pin 54, the breast-bar may be locatedin the position with relation to the nailing'mechanism most advantageousfor the work in hand.

In using my improved top-lift-holder, the operator, by selection of theopenings 52 and 56 through which the pin 54 passes and by the adjustmentof the nut 46, locates the breast-bar 34 and the fork 26 in the properrelation for the size of a top-lift T to be spanked during the secondhalf of an operating cycle upon the nails N by which a base B has beenattached to a jacked shoe S at the beginning of the cycle. The topliftis placed in the holder 15 by forcing back the fork 26 by contacttherewith of the rear of the lift and then allowing the spring 40 tocarry the breast of the lift forward against the bar 34. Because of thestrength of the spring 48, the position of the bar is not disturbed.With correct adjustments, the close of the nailing operation may findthe breast of the attached heel in substantially the correct relation tothe breast of the top-lift in the holder t. The operator may, however,have displaced the shoe with its base angularly about the axis of thejack H), or the back stop with which the shoe contacts may not retain itin the desired longitudinal relation. Such departures from theconditions which would cause registration between the breast of thetop-lift and that of the prebreasted heel may be kept within limits suchthat the breast-edge of the descending base or one of the breast-cornerswill engage the inclined surface 38 of the bar. The reaction upon thebase will produce a force which will urge the shoe and base rearwardlyand turn them about the axis of the jack. Simultaneously, the breast-bartends to yield under the applied force, so the top-lift will share inthe registering action, it moving with the bar under the influence ofthe fork 26 actuated by its spring 40. Before the ends of the nailsprotruding from the base reach the top-lift, the breast-edge of the basewill have arrived at the gaging surface 39. This determines accuratelythe coincidence of the breast-edges of the two heel-portions, so that notrimming operation upon them will be required.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a heel-attaching machine, a movable shoe-support, a movablecarrier co-operating therewith, and a holder for a heel-portion mountedupon the carrier and having opposite members for contact with theheel-portion, one of said members being arranged to move under theinfluence of the work on the movable support into registration with saidwork.

2. In a heel-attaching machine, a movable shoe-support, a movablecarrier co-operating therewith, and a holder for a heel portion mountedupon the carrier and having opposite members for contact with theheel-portion, one of said members being arranged to move under theinfluence of the work on the movable support and being provided withmeans for contact with the work to change the position of said work.

3. In a heel-attaching machine, a movable carrier, and a holder for aheel-portion mount ed upon the carrier and having opposite members forcontact with the heel-portion, one of the members being movable towardand from the other and said other member being arranged to move underthe influence of the Work in the direction of such movement.

4. In a heel-attaching machine, a movable carrier, a holder for aheel-portion mounted upon the carrier and having opposite membersrelatively movable to contact with the heelportion and clamp it betweenthem, and a spring interposed between each member and the carrier, oneof the members being provided with means with which the work contacts tocause such member to yield.

5. In a heel-attaching machine, a movable carrier, a holder for aheel-portion mounted upon the carrier and having opposite membersrelatively movable to contact with the heel-portion and clamp it betweenthem, and a spring interposed between each member and the carrier tourge said members toward each other, said springs acting upon themembers with different degrees of force, the member acted upon by thestronger spring being provided with means with which the work contactsto cause such member to yield.

6. In a heel-attaching machine, a swing-plate, and a holder for aheel-portion mounted thereon and including a heel-fork and a breast-bar,said breast-bar being provided with a shank movable upon the plate, thework-contacting portion of the bar having a downwardly and inwardlyinclined surface terminating in a work-gaging surface.

7. In a heel-attaching machine, a jack upon which a shoe having anattached heel-base may move, and a top-lift-holder having associatedwith it means for causing a relative movement of the base and top-lifttoward registration with each other.

8. In a heel-attaching machine, a jack upon which a shoe having anattached heel-base may turn about the axis of the jack, and atop-liftholder having associated with it means for turning the shoeabout said axis.

9. In a heel-attaching machine, a jack for a shoe having an attachedheel-base, and a toplift-holder co-operating with the jack and includinga yieldable breast-bar having an inclined surface arranged to receivecontact of the heel-base.

10. In a heel-attaching machine, a jack for a shoe having an attachedheel-base, and a toplift-holder co-operating with the jack and includinga yieldable breast-bar having an inclined surface arranged to receivecontact of the heelbase, said inclined surface terminating in a verticalbase-gaging surface.

11. The combination with a carrier provided with ways, of a holder for aheel-portion comprising a rear contact member and a breastcontact membermovable in the ways, said breast-contact member having an inclinedsurface arranged to receive contact of a portion of the work, and aspring acting upon each member to urge it toward the other.

12. The combination with a carrier, of a holder for a heel-portioncomprising a rear contact member mounted upon the carrier, abreast-contact member movable upon the carrier, and a spring exertingits force to urge the breast-contact member toward the rear contactmember, the carrier and breast-contact member being provided with anopening and a pin passing through the opening with clearance, suchconnection limiting the movement of the breastcontact member under theinfluence of the spring and allowing movement of said member under theinfluence of the work.

13. The combination with a carrier, of a holder for a heel-portioncomprising a rear contact member mounted upon the carrier, a breascontact member movable upon the carrier, and a spring exerting its forceto urge the breast-contact member toward the rear contact member, thebreast member being provided with a series of openings and the carrierwith a pin which may be positioned in any one of the openings withclearance to permit movement of the breast member upon the carrier.

JOSEPH M. BARTON.

